The Power transmission reference article from the English Wikipedia on 24-Apr-2004 (provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

Power transmission

Since the development of technology, power transmission and storage systems have been of immense interest to technologists and technology users.

Power is defined formally as units of energy per unit time. In SI units:
1 watt = 1 joule/s = 1 newton * metre/second

Transmission is relocating this energy from its place of origin to a location where it is applied to performing useful work.

With widespread establishment of power grids the most common usage of the phrase power transmission has come to be associated with electric power transmission. See also waveguide, conductor.

Hydraulic/Pneumatic Early water screws, irrigation canals

Mechanical driveshaft, see also Automobile transmission

Gravitional potential - Throwing or dropping rocks, pumping water uphill (windmill pumps) equipotential lines etc.

Microwave

Artificial Fuels:

• Radioactive isotopes
• Wood Alcohol
• Grain Alcochol
• Methane
• Synthetic Gas
• Cryogenic gases
  • H₂
  • Liquified Natural Gas (LNG)

See also distributed generation.

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